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Adding resistance to varactor circuit

If we a varactor and we want to control let's say the resonant frequency of the circuit ,in my schematic we must add R1 correct?Else we create a low resistance path for current to flow not through the varactor so the "AC circuit" gets distorted from the "DC circuit".


![hi](https://electrical.codidact.com/uploads/TAtztTsDjJ26Bp3pjzwxBRgp)

So by changing the value of Rv we can change the capacitance of the varactor and the resonant frequency.

One last question if we deliver voltage to a house are there varactors which can handle 120V AC so we can create a panel of supply of voltage and we can regulate the quality of current in our loads from a switch?